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<title>Other Built-in Functions (Using the GNU Compiler Collection (GCC))</title>

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<h4 class="subsubsection" id="Other-Built_002din-Functions-1"><span>6.60.13.5 Other Built-in Functions<a class="copiable-link" href="#Other-Built_002din-Functions-1"> &para;</a></span></h4>

<p>This section describes built-in functions that are not named after
a specific FR-V instruction.
</p>
<dl class="table">
<dt><code class="code">sw2 __IACCreadll (iacc <var class="var">reg</var>)</code></dt>
<dd><p>Return the full 64-bit value of IACC0.  The <var class="var">reg</var> argument is reserved
for future expansion and must be 0.
</p>
</dd>
<dt><code class="code">sw1 __IACCreadl (iacc <var class="var">reg</var>)</code></dt>
<dd><p>Return the value of IACC0H if <var class="var">reg</var> is 0 and IACC0L if <var class="var">reg</var> is 1.
Other values of <var class="var">reg</var> are rejected as invalid.
</p>
</dd>
<dt><code class="code">void __IACCsetll (iacc <var class="var">reg</var>, sw2 <var class="var">x</var>)</code></dt>
<dd><p>Set the full 64-bit value of IACC0 to <var class="var">x</var>.  The <var class="var">reg</var> argument
is reserved for future expansion and must be 0.
</p>
</dd>
<dt><code class="code">void __IACCsetl (iacc <var class="var">reg</var>, sw1 <var class="var">x</var>)</code></dt>
<dd><p>Set IACC0H to <var class="var">x</var> if <var class="var">reg</var> is 0 and IACC0L to <var class="var">x</var> if <var class="var">reg</var>
is 1.  Other values of <var class="var">reg</var> are rejected as invalid.
</p>
</dd>
<dt><code class="code">void __data_prefetch0 (const void *<var class="var">x</var>)</code></dt>
<dd><p>Use the <code class="code">dcpl</code> instruction to load the contents of address <var class="var">x</var>
into the data cache.
</p>
</dd>
<dt><code class="code">void __data_prefetch (const void *<var class="var">x</var>)</code></dt>
<dd><p>Use the <code class="code">nldub</code> instruction to load the contents of address <var class="var">x</var>
into the data cache.  The instruction is issued in slot I1.
</p></dd>
</dl>

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